A lock for holding a first part to a second part comprises a holding body with a receptacle for receiving a protruding part of the second part. The holding body having has a wall that borders the receptacle and a locking element, the locking element having a protrusion, whereby the locking element has a first position, whereby in the first position the protrusion is in a locking position, whereby in the locking position the protrusion protrudes from the wall into the receptacle by a first amount and the locking element has a second position, whereby in the second position the protrusion is in a release position, whereby in the release position the protrusion either protrudes from the wall into the receptacle by a second amount, whereby the second amount is smaller than the first amount, or the protrusion does not protrude from the wall.

An insulation system for an aircraft fuselage uses a plurality of stringers extending longitudinally. An insulation blanket is configured for installation on the stringers and a plurality of stringer clips are attached to and extend from an outboard side of the insulation blanket. Each stringer clip has a connecting flange engaged to a cover of the insulation blanket. A first attachment arm extends outboard from a first end of the connecting flange and terminates in a first hook resiliently engaging the stringer. A second attachment arm extends outboard from a second end of the connecting flange and terminates in a second hook resiliently engaging the stringer.

An insulation system for an aircraft fuselage uses a plurality of stringers extending longitudinally. An insulation blanket is configured for installation on the stringers and a plurality of stringer clips are attached to and extend from an outboard side of the insulation blanket. Each stringer clip has a connecting flange engaged to a cover of the insulation blanket. A first attachment arm extends outboard from a first end of the connecting flange and terminates in a first hook resiliently engaging the stringer. A second attachment arm extends outboard from a second end of the connecting flange and terminates in a second hook resiliently engaging the stringer.

A portable interface system including an interface device, in particular a sensor device, and a base part, wherein the base part includes an attachment area for the interface device and a retraction device, wherein the retraction device is attached to the interface device and is designed to move the interface device into a predefined holding position in the attachment area, wherein the interface device is detachably fixed without tools in the holding position in the attachment area.

A clip for holding a light bulb for display on a gutter, shingle, or other structure includes a base, a support arm extending from an end of the base to a second end of the support arm, and a cantilever beam extending from the second end of the support arm towards the base. The cantilever beam and base define a clip mouth for receiving the structure into the clip. A bulb holder is rigidly attached to the support arm and defined a through-hole to receive the light bulb held by the clip. The bulb holder is attached to the support arm between the cantilever beam and base.

A clip for holding a light bulb for display on a gutter, shingle, or other structure includes a base, a support arm extending from an end of the base to a second end of the support arm, and a cantilever beam extending from the second end of the support arm towards the base. The cantilever beam and base define a clip mouth for receiving the structure into the clip. A bulb holder is rigidly attached to the support arm and defined a through-hole to receive the light bulb held by the clip. The bulb holder is attached to the support arm between the cantilever beam and base.

A test stand for an unmanned aerial vehicle comprising: a base arranged to make contact with the ground; a frame extending from the base, the frame comprising at least a first side portion and a second side portion that define a space therebetween; and a mount slidably attached to the frame within the space, the mount configured to affix to an unmanned aerial vehicle such that the mount and the unmanned aerial vehicle slide within the defined space in a direction parallel to the frame during a test flight.

A test stand for an unmanned aerial vehicle comprising: a base arranged to make contact with the ground; a frame extending from the base, the frame comprising at least a first side portion and a second side portion that define a space therebetween; and a mount slidably attached to the frame within the space, the mount configured to affix to an unmanned aerial vehicle such that the mount and the unmanned aerial vehicle slide within the defined space in a direction parallel to the frame during a test flight.

An electrical connection assembly includes an electrical box including a housing having an internal surface defining an internal volume of the housing. An electrical connector is positioned outside the internal volume of the housing and fixed to the housing with a fastener. The housing includes an aperture having an opening defining an insertion path extending from a location external to the housing along a frame of the electrical connector to a location within the internal volume of the housing. The assembly includes a disc mechanically secured to the housing relative to the opening to obstruct the insertion path. A retainer and a bushing including a membrane for the electrical connector as well as methods of making an electrical connector are also provided.

An electrical connection assembly includes an electrical box including a housing having an internal surface defining an internal volume of the housing. An electrical connector is positioned outside the internal volume of the housing and fixed to the housing with a fastener. The housing includes an aperture having an opening defining an insertion path extending from a location external to the housing along a frame of the electrical connector to a location within the internal volume of the housing. The assembly includes a disc mechanically secured to the housing relative to the opening to obstruct the insertion path. A retainer and a bushing including a membrane for the electrical connector as well as methods of making an electrical connector are also provided.